High Definition Field View:25 mm large diameter objective lens, cleaner and brighter in the visual effect of the presentation, the field of view is more clear and open, ≤ 2 MOA parallax range can be more accurately,fast observed when aiming the target Shake Awake: After about 8 minutes of stationary state, The red dot will turn off the light and go to sleep, and only need a slight vibration to return to the previous brightness; this can be more efficient to save power, improve battery life